Not sure what Easter yellow is James. The Panama yellow on the 1958 looked good, not too bright, not too pale. The sunfire yellow used on the mid year cars was a light pale colour and looked real good. Seen a few repainted a bright yellow over the years and IMO looks not right.
The bright yellow looks great on all C3’s, whereas a pale yellow IMO would look not right.
Bright yellow on C4’s and later looks great, and again a pale yellow would look drab.