What is the as-supplied colour of the Uni-Mould gelcoat? I have seen the video where it is black, but the MSDS shows 'miscellaneous'. I am looking to make a mould in which I will lay up an Easy-preg & Vari-preg part. The mould shape is essentially a 5-sided box (laying up the part inside the box) with relatively small fillets in the corners, so I suspect I will have to cut the Easy-preg to get it properly into the corners. If the tool gel coat is black, I suspect I will struggle to see I have a neat joint line, whereas a lighter colour would make this easier. If the colour is black, can it be changed (e.g. with a white pigment) to help - if so which type of pigment is suitable (epoxy, polyester, polyurethane), or is there some other clever way?