Kitchen help!

[CHST]

I want to give my kitchen a spruce up. It is a bespoke country style kitchen which was here when we moved in so I don't want to rip that out. I painted when we moved in, in haste and I am noticing so much how yellow it all looks. The cabinets are some sort of farrow and ball yellowy cream but we also have a fireplace surround and tongue and groove panelling that is the same colour so a bit yellow cream overkill. The walls are currently overtly olive which I love as a colour but doesn't seem to be the colour for this kitchen. I was thinking of painting the walls and panelling and fireplace but leaving the cupboards as it is too faffy. What would go? What would make it look less yellowy?
The rest of the downstairs is a mixture of greys and greens if that helps