SS-III Dash Lighting trouble Options

[G4Frost]

I was trying to change the lights in the dash on my SS-III the other day from orange to blue and I encountered the problem of for some reason the blue light doesn't want to shine through the (I think its) coloured plastic of the letters.
My basic understanding of light and coloured filters from playing around and changing the clock colour to blue is that the coloured film only lets light of a certain colour through thus making it look orange by blocking out all coloured light but orange. However I have seen somewhere in these forums someone linked to a Japanese website in full Japanese. But he had the same white SS-III dash and he was able to make the blue shine through somehow and I cant find it again for the life of me.
I know there is a way to make it blue somehow but it seems to only let orange/red light through as it allows my shift light led's to shine through fine.
Any help or advice would be greatly appreciated.

The blue bulbs are actually brighter then the stock orange lights yet still dont shine through

Shift light:
ON


OFF


ONE STOCK ORANGE BULB WITH REST BLUE


TWO SHOTS OF BLUE NOT SHINING THROUGH

[igpx12]

The only method I've heard of with letting light through is by using a fine grit sandpaper on the back of the gauge faces and sand off the OE tint film. Usually a fix when using clear bulbs to get rid of the off white tint from the gauges.