For colour, let me share some interior design of the Renaissance wing of Blois castle with you:
Stained glass windows in the chapel of the Queen's apartments
The Queen's bedroom, if I remember correctly (otherwise, it would be the King's.). The interesting fact here is the interior design: it was done in the 19th century according to the imagination the contemporary conservators had of indoor design and colouring of the Renaissance.
The colours don't convey so well in these shots, as I didn't use flash and it was a very rainy, gloomy day. But they were indeed very brilliant and bright, really overhwhelming in their abundance and intensity. I have serious doubts that the design could have been even close to this, though - I mean, so many different patterns and colours would give everybody nightmares. And wouldn't people prefer to have well-rested sovereigns not already grumpy when getting up? *g*
The King's bedroom (or the Queen's if I mixed it up). Not less colourful and nightmare-inducing than the other bedchamber, but with an interesting addition: large French doors opening to the balconies overlooking the city. The king in question was François I who really brought the Renaissance into the culture of his country, and started right with his new wing of the castle. I don't know at the moment if the French doors have been realised here for the first time, but they weren't in any other of the castles of the early Renaissance we visited or I knew otherwise.