Drive Space plugin background colour

Since Windowblinds 5, skins can now be transparent which is very pleasing, and TLB works fine with it for me except....except the drive space plugin. Due to the combination of not being able to set the text colour or a background colour, I can just barely make out how much space is free on the drives.

Would it be possible to add preferences for background and/or text colour? Perhaps even skins, allowing for background images?

You can change the text color now. Right-click Drive Space->Appearance->Text Color

Other suggestion: Possibility to add gradients to the graphs. I'd love to have a gradient from green to red instead of it instantly hitting red at the alarm percentage.

And just to be a bother, setting the alarm by MB/GB instead of a percentage, and individually for each drive. For example: My system drive/partition is 80 gigs, and I'd like to know when I have less than 5 gigs free on it, while on my storage partition (870GB) I'd like to know when I have less than 20 gigs free.

Thank you for suggestions I'll release them in the next versions.