Aloe sinkatana
 

The only yellow coloured Aloe I remember seeing at the Botanical Garden. Its really cool and I think it was a low growing species too.
https://farm8.staticflickr.com/7603/...64c4bbd8_b.jpgAloe sinkatana by tindomul1of9, on Flickr

I love yellow flowers. Most of my aloes and aloe relatives veer towards the red/orange/pink color range. I think I have a Haworthia whose flowers are called "yellow", but which are actually more of a tan.

Really pretty!