When I loaded ED's Color Toolbar v2.5 (using OS X 10.6.8, Reaper 4.12, SWS v2.1.0) the included colors were all wrong, starting with blue instead of red. See the row of colored squares in the bottom right of this image:
I went through all the colors and noticed that their RGB colors were all transposed. For example, the first color should have been red. In the stock ED Toolbar Colorset.SWSColor file, I saw custcolor1=213. Now, 213 in hex is 0xD5. That's blue if your hex colors are like 0xRRGGBB. To get red, you need to use 0xD50000 which is a totally different number. So, anyways, I went through all the colors and transposed the digits and got this. See the row of colored squares in the bottom right of this image:
ED Toolbar Colorset.SWSColor
Since the swatches match the toolbar icon colors, I'm going to use this. Feel free to use it as well!