Dock Separators: Blueglow Mac

At first you have to create your custom Icons. You can use GIMP (1, 2) for this (I love this piece of software!) or you can use a more Pixel oriented painting program like Pixen

My icons were created like this (those of you which don’t like to build their own can skip this part):

First i took a screenshot from the dot below a running program. (?+?+4)
I opened the picture with GIMP and used the “color picker” to pick up the blue color. Double-click the color in the color palette. Choose the right top blue color. (Now you should have this “Macintosh blue color”)
Create a new picture with measurements “128×128? (with transparent background)
Create a rectangle selection in the middle, width about 8 pixel. Use the “Gradient tool” to fill the selection. Please make sure to use “Bi-linear”, the cursor needs to be in the middle.
Select the “pencil tool” with a sice of 1 to round the edges. (Select each color graduation (press control do have a temporary color picker…)) Do your best in this step. No rules…just paint. ;-)
Copy the edge, paste, flip it by 180º degress and move it downwards.
Save as .PNG
Done!