Colored text output

[VladimirMarkelov]

Add a simple mark up for text:
<f:..> - text color
<b:..> - background color
<f:> - reset text color to default (color that is set for control)
<b:> - reset background color to default (color that is set for control)
No closing tags - every tag is on till the next tag appears or to the end of text

Need global functions like: count printable characters, draw a colored string, smart color string cut (with keeping correct colors for printed symbols)