MB623, Light Ivory, shows up on two color chip brochures I have, one from 1989 and one that AFAIK covers '77-79 or so. My other choice among those shown would be MB606, maple yellow; given your red interior, Light Ivory would be the way to go. As for other yellow options, 624 is too yellow and 673 is too close to tones reminiscent of my earliest days of parenthood.

__________________
Craig Bethune

'97 SL500, 40th anniversary edition

'04 Olds Bravada (SWMBO's)
'06 Lexus ES330
'89 560SL (sold)


SL--Anything else is just a Mercedes.
(Kudos to whoever said it first)