I have blue/green/grey skin from the inside of my eye right the way round underneath. My skin is 'thin' generally. Concealer just doesn't cut it on its own. I drink 3 litres of water every day, generally eat well and look after my face. I see no improvement with creams etc so the only solution I can see is find a way to cover it somehow. Someone suggested a colour corrector but which colour do I go for and which brand?