Ever so sorry but I can't remember shade of paint! However I rolled it on with a mini roller... Took for ever! Set one of the shelf areas up as a make shift drying rack, that seemed to work well.
The uprights have an 'L' bracket at the top behind the coving line and one below the skirting line, the rest is up to gravity.
During installation etc, I was subbing to a very small construction firm. If I did them now (self employed) I would have sprayed everything first then delivered and installed.