K57 light color patterns: suggestion

[Goodgulf]

I guess I didn't look at the specs closely enough when purchasing the k57.  My eyesight, particularly in poor lighting conditions, is not good.  I am constantly swapping my regular glasses and reading glasses.  I was hoping for a backlight pattern that would be useful, rather than just 'cool'.  For instance, it would be great if different types of keys had different colors.  For example: numerals in red, function keys in green, alphabetical in yellow with F and J highlighted.  If I know that number keys start at a certain point, it is easy to count out the one I want without actually reading the name of the key.  This would be a really useful upgrade.