Dear Swedengirl,
the maxi Twilly is quite wide, so please make sure that you have an idea how you would use in your Evelyne and how it would work. In case you do have various silk items from Hermes I would start by holding them against the bag to see what you would like. From the thread here you can see all the lovely combinations of twilly designs and bags and members have made the wildest color mixes work, for myself (gold Birkin), I try to use twillies that are rather monochrome and colorwise less "wild". That said, I believe as a general advice, there are two routes you can go: 1. match the Twilly to your bag - in this case, I would suggest a twilly with main colors orange, yellow, brown or 2. match the Twilly to your outfit - for the regular Twilly, I love the bandana ones, since they are usually one solid color with black and white pattern.
That said, I have had a look at the Maxi Twillies available in the online store and would suggest you to have a look at the Maxi-Twilly Slim Della Cavalleria, which has three color ways that I believe would work with gold ( Indigo/Gold/Marron, Ivoire/Gris Bleuté/Encre and Orange/Bleu Jean/Potiron). The Maxi-Twilly Slim Le Grand Prix du Faubourg in Beige Doré/Noir could also be something for you as it is super neutral and reduced in terms or number of colors, which is quite rare I believe. For myself, I would probably go for this one or the Maxi-Twilly Slim La Pâtisserie Française in Orange/Miel/Blanc.
Share pictures one of your beauty once you have decided!