This should be universal across entire editing software, as devide blending only devided the RGB value of the color
underneath the "devide" layer.
The way this method work is to create a solid color and pick a color from the images/videos that have a cast on it. (Color that supposed to be white but arent), then simply blend the solid layer with devide blending mode.
256 " 8 bit color " ( A ÷ B )
= R G B Value
This straight away remove color cast on the images/videos & make what supposed to be white, to be an actual white (WB corrected I shall say?). Sadly, VEGAS Pro don't have any divide blending mode and this should be add on future VEGAS Pro 18.
Luckily, I own a VEGAS POST product and I remembered VEGAS Effects have bunches of blending mode option to choose from. It does works, but sadly I dont have the ability to tweak Brightness to regain back the highlight detail as in videos. I tried to use Fill color FX in VE but the FX is very simple and it doesnt offer any small tweak control for hue, saturation & brightness.
This small control (Hue/brightness/Saturation) can be founded on After Effects (Both Solid layer & Fill FX) & in Premiere Pro too.