Ah, I see.
I know what you mean about the plastic hoods. I changed to a metal screw in hood as I'd used a plastic push on hood on it but that kept falling off. The only plastic hood I've got is the one Tamron stuck on my Tamron 20A 70-150mm lens. I think it's too shallow, but I can't break it off and replace it with a good metal hood as the idiots made it so the focusing ring comes out over the front element of the lens!
I saw that color ambion lens when I did a search on 'PicClick UK' (after you mentioned it) which sorts through ebay listings and shows all results on one page. I'm tempted, but I don't know of any lens caps that would fit the back of the lens until I could get a 90mm plastic bubble case for it. In fact I don't know what I'd do if the case for my 90mm lens breaks in the way that the one for this 35mm lens has.
An ever-growing amount of photo-stuff and a never-growing amount of photo-talent.