Parallel Universe - Red Dwarf - was created on 1988-10-11.
There are many red dwarf stars in the universe. They are not most common type of star.
Kryten - Red Dwarf - was created on 1988-09-06.
Ouroboros - Red Dwarf - was created on 1997-01-31.
The End - Red Dwarf - was created on 1988-02-15.
Pete - Red Dwarf - was created on 1999-03-07.
Meltdown - Red Dwarf - was created on 1991-03-21.
Red-billed Dwarf Hornbill was created in 1857.
Thanks for the Memory - Red Dwarf - was created on 1988-09-20.
White Hole - Red Dwarf - was created on 1991-03-07.
Red Dwarf Building a Better Universe - A Tribute to Mel Bibby - 2003 V is rated/received certificates of: UK:12
A newly formed white dwarf will be the hottest of the "dwarfs" - at a temperature of over 150,000 K but this will slowly cool over time. There is a possibility of a hypothetical blue dwarf, when a red dwarf exhausts it's supply of hydrogen. However, because of the slow speed of fusion of a red dwarf, the Universe is not yet old enough to have created a blue dwarf, so no measurements can be made on it's possible temperature.
Basically, none. Red dwarf stars have a lifetime that is much larger than the age of the Universe.Actually, if a lot of additional mass falls on a red dwarf star, it would start to burn more quickly. But then, of course, it would no longer be a red dwarf star.