Yes - ‘Maman Cochet’ was considered such a landmark in the development of Tea roses - approaching the highest perfection of rose form - and breeders aspired to duplicate its qualities in other colours – particularly the elusive definite yellow - or to promote roses by likening them to ‘Maman Cochet’. So we see a number of roses with the synonym ‘Yellow Maman Cochet’.
‘Alexander Hill Gray’, ‘Lady Plymouth’, ‘Souvenir de Pierre Notting’, ‘Mme Derepas Metral’ and ‘Souvenir de Jeanne Cabaud’ have all been named 'Yellow Maman Cochet' at some time and there may be more.

On the subject of fading and deepening colours, it all depends on the light (and latitude). If you cut them in the bud and allow them to open indoors, a much deeper colour develops. If left to open on the bush in full sun, the blooms will usually pale but the blazing Australian sun and the kinder sun of English summers and those of other higher latitudes will affect colours differently . Most Tea roses are very responsive to light and temperature and vary according to conditions.
The pot hunters covered yellow buds with brown paper bags, cut-off brown beer bottles or other ingenious shading devices to get the deepest possible shade of yellow in their prize-winning blooms.