Molded doors have too much "plastic" in them to accept stain.
You could try "grain painting" them if a solid color didn't work with the design
Amarr
Reliabilt is made my Jeld Wen for Lowes and Home Depot
Actually, while RB is a Lowe's owned brand name, the manufacturers who build under that name vary greatly. For example, RB garage doors are made by Amarr. RB patio doors are Jeld-Wen RB interior doors are manufactured by Masonite Inc. RB windows previously were Survivor, but when they went under, Atrium took over the slot. This, by the way, I can only say is true for the east. Different regions of the country have different suppliers who manufacture under the RB brand.
These doors generally get good reviews from customers. You can check out the Reliabilt website to find out more of the reviews and to choose the one that best meets your needs.
You can buy them from stores like Home Depot and Lowes. You can also purchase them online. Purchasing interior doors online would be the best choice as you can see a wider variety of doors.
Jeld-Wen!
ReliaBilt patio doors for Lowe's are manufactured by JELD-WEN, a leading manufacturer of windows and doors. JELD-WEN has been a trusted supplier to Lowe's for many years, providing a range of quality products for customers.
Measure Them
Lowes does sell windows and doors. They do have a website and they have many of their models online that you may not be able to see in a store. The sale associates are very knowledgeable about the products as well.
I paint interior doors to match the trim, but everyone has their own ideas.
Normal interior doors stand 7ft.
They are ok for a cheap door, I would recommend spending a bit more and buying a name brand like thermatru or JeldWen.