Bright orange pollen in Observation nest-update

UPDATE BELOW

An interesting observation from Diane.

"This morning I peaked into small observation nest purchased some years ago
 and noted a bright red color on top surface of one edge of two
cells...do you know what this might be?

Diane
Ohh how lovely.  The bee has collected pollen from two sources, one flower
with yellow pollen and the other flower with orange pollen.

By touching the anthers of flowers you can see there is quite a lot of
pollen colors out there.  One flower that has bright orange pollen is theTiger lily.

 Margriet



This is a picture of a 3 nesting tunnel observation/viewing nest.  The lowest tunnel is empty.  The middle tunnel contains 3 completed chambers with pale yellow pollen.  Two cells ( of the four) in the upper channel have bright orange and yellow pollen as part of the pollen lump.  There is even a bee in the upper nesting tunnel.

 Thanks so much...another bit of learning...this is fun!   Diane

Here is a picture of the same nest taken about a month later. 
Cocoons are fully formed  with adult bees inside.