Status bar codes, change the frame colors

Does anyone know, how to change values the frame colors of the meters shown in the screenshot (also their color values) from white to black oder another dark color? I just started using Windows 7 & find the contrast too low. I can´t find more detailed information in the status bar codes section.

Currently is use this code:

{h!L} <#ff0000> {hiL} </#>{h!L}
{h!L} {smp3L} /{h!L}{h!L} {tmp3L} {h!L}
{i:dir} {sdL}/{tdL}
{i:.txt} {sfL}/{tfL}
{sbLa} von {tbLa}
{bg+v=sbL/1.0g,c=#8eb2e4,c1=#32cd32,c2=#FF0000,c3=#FF0000,w=35,f=2,l=0,g=2}{bg+v=sbL/4.7g,c=#8eb2e4,c1=#32cd32,c2=#FF0000,c3=#FF0000,w=35,f=2,l=0,g=2}{bg+v=sbL/15.0g,c=#8eb2e4,c1=#32cd32,c2=#FF0000,c3=#FF0000,w=71,f=2,l=1,g=2} {dfL} frei {bgL+f=2,w=50,g=0,c=#8eb2e4,c1=#32cd32,c2=#FF0000,c3=#FF0000,g=2} {rleft-}
{h!R} <#ff0000> {hiR} </#>{h!R}
{h!R} {smp3R} /{h!R}{h!R} {tmp3R} {h!R}
{i:dir} {sdR}/{tdR}
{i:.txt} {sfR}/{tfR}
{sbRa} von {tbRa} {rpad}
{bg+v=sbR/1.0g,c=#8eb2e4,c1=#32cd32,c2=#FF0000,c3=#FF0000,w=35,f=2,l=0,g=2}{bg+v=sbR/4.7g,c=#8eb2e4,c1=#32cd32,c2=#FF0000,c3=#FF0000,w=35,f=2,l=0,g=2}{bg+v=sbR/15.0g,c=#8eb2e4,c1=#32cd32,c2=#FF0000,c3=#FF0000,w=71,f=2,l=1,g=2} {dfR} frei {bgR+f=2,w=50,g=0,c=#8eb2e4,c1=#32cd32,c2=#FF0000,c3=#FF0000,g=2}
{gfl}
{ls}

It's the 'f' value that you want to change in the graphs.

Here are all the current possible values. I've grouped them by similarity instead of in numerical order:

f=0 -- no frame
f=1 -- 3D (white top/left, black bottom/right)
f=6 -- 3D (black top/left, white bottom/right)
f=2 -- flat (white with a glass status bar, black otherwise)
f=4 -- flat (always black)
f=5 -- flat (always white)
f=3 -- fill status bar segment behind any other text in it

So change all your f=2 to f=4 and you should get what you want.

Yep, now it´s much better. That´s two more options, the help only mentions "0=no frame, 1=3D, 2=flat, 3=fill status background".