colors

CSS text-decoration: reverse

I'm surprised that there is no "text-decoration: reverse" in CSS as it seems very awkward to achieve using JavaScript. I.E. set the element's foreground and background color to the background and foreground of the parent respectively. I noticed JavaScript techniques for that here Surely it's not that complicated? ...

How to make a color transparent in a BufferedImage and save as PNG

I have been searching the web for this, but I havent found any decent help. I have a BufferedImage, which I have read in with ImageIO. Now I would like to make a certain color in that image to transparent, and save the image as PNG. I know I cannot just "paint" the transparent color for obvious reasons, so I am guessing I need some kin...

Algorithm Question: Need to dynamically INCREMENT from 00FF00 to FF0000 over TIME, C#/Java

Hey all, I want to change the color Bright Green to Dark Red over time (240 hours). The best way I can see is to change the hex combo from 00FF00 to FF0000. I don't know how to dynamically count up to FF0000 from 00FF00 for the life of me. I'm looking over a 10 day period, so most likely over 240 hours to increment. Can anyone help ...

eclipse coloring : what is the pref item for background color of all occurances of selection

In Eclipse, when a identifier ( function name or variable etc ) is clicked, the background of that identifier and all other occurrences of that identifier are given a different background color. Can anybody tell me, what is the preference item for changing background color for this. ( last this remaning in my dark eclipse settings ). ...

unsubscriptable object

Hi I'm using PIL im = Image.open(teh_file) if im: colors = im.resize( (1,1), Image.ANTIALIAS).getpixel((0,0)) # simple way to get average color red = colors[0] # and so on, some operations on color data The problem is, on a few (very few, particulary don't know why those exactly, simple jpegs) I get 'unsubscri...

Actionscript convert background to Transparent

The purpose of the function is to covert the background to transparent and then return the bitmapdata, but it seems it do not work. The code is following: private function transparentConverter( source:BitmapData, threshold:Number = 0.1 ):BitmapData { var bitmapData:BitmapData = new BitmapData( source.width, source.height, true, ...

div background color, to change onhover

I'm trying to make a div's background color change on mouse over. the div {background:white;} the div a:hover{background:grey; width:100%; display:block; text-decoration:none;} only the link inside the div gets the background color. what could I do to make the whole div get that background color? thank you LATER EDIT: how ca...

How to check if an RGB image contains only one color?

I'm using Python and PIL. I have images in RGB and I would like to know those who contain only one color (say #FF0000 for example) or a few very close colors (#FF0000 and #FF0001). I was thinking about using the histogram but it is very hard to figure out something with the 3 color bands, so I'm looking for a more clever algorithm. An...

Emacs/xterm color annoyance on Linux

I'm using emacs in a console window both on my local Linux box and on the login node of a remote cluster. I use emacs regularly, and I've got the foreground color set to white in my .emacs file like so: (set-foreground-color "white") (set-background-color "black") However, when I run emacs, the foreground isn't white; it's grey and v...

How does Google's image color search work?

Let's say I query for http://images.google.com.sg/images?q=sky&imgcolor=black and I get all the black color sky, how actually does the algorithm behind work? ...

How do I set up my Linux X terminal so that emacs has access to 256 colors?

When I run emacs -nw in an X terminal window, and I ask for M-x list-colors-display, I am offered a paltry palette: black red green yellow blue magenta cyan white I am told it is possible to get 265 colors. Setting the TERM environment variable to xterm-256color does n...

Converting RGB to grayscale/intensity

When converting from RGB to grayscale, it is said that specific weights to channels R, G, and B ought to be applied. These weights are: 0.2989, 0.5870, 0.1140. It is said that the reason for this is different human perception/sensibility towards these three colors. Sometimes it is also said these are the values used to compute NTSC sign...

How can I change the color of my prompt in zsh (different from normal text)?

To recognize better the start and the end of output on a commandline, I want to change the color of my prompt, so that it is visibly different from the programs output. As I use zsh, can anyone give me a hint? ...

Visual Basic - Guess the colour program

I am trying to make a small game in which the computer gives a random code of colours (red green yellow and blue) and then you must try and guess them... I am having trouble making the colours random though. The colours are the backcolour of 4 buttons. The code is four colours long. The player then clicks on some buttons just below that...

How to write a tool, inverting colors in Windows?

I read a topic in this site about it, but decided to post another one as I want to write such a tool, but I don't have much experience in C# & .NET, so it could take me too much time just digging the Net, while someone can just direct me to the right library or classes to be used. So, straight to the point. I want to write a tool that, ...

Fade a color to white (increasing brightness)

I want to make a text box in .NET "glow" yellow, and then "fade" to white (basically, by incrementally increasing the brightness). I think Stackoverflow does this after you've posted an answer. I know that increasing brightness is not all that simple (it's not just uniformly increasing/decreasing RGB), but I'm not sure how to do this. P...

How to save an SDL surface to a PNG and get the colors right?

I wrote up a simple patch to add PNG-saving capabilities to the SDL_Image library. It almost works, too. Problem is, the colors come out all scrambled, and I don't know enough C to figure out what's wrong. Can anyone take a look at this and help me fix it up? Use case: Load a 256-color PNG image with IMG_LoadPNG_RW. Save it with IM...

Aesthetic Web Colors

What's a good resource for choosing aesthetically pleasing color combinations and themes? At the moment I'm using a color picker and stealing from various places. It's a hack. ...

Using ToArgb() followed by FromArgb() does not result in the original color

This does not work int blueInt = Color.Blue.ToArgb(); Color fred = Color.FromArgb(blueInt); Assert.AreEqual(Color.Blue,fred); Any suggestions? [Edit] I'm using NUnit and the output is failed: Expected: Color [Blue] But was: Color [A=255, R=0, G=0, B=255] [Edit] This works! int blueInt = Color....

Algorithm for Additive Color Mixing for RGB Values

I'm looking for an algorithm to do additive color mixing for RGB values. Is it as simple as adding the RGB values together to a max of 256? (r1, g1, b1) + (r2, g2, b2) = (min(r1+r2, 256), min(g1+g2, 256), min(b1+b2, 256)) ...