as I remember there was a sejjil-1 and then after sejjil-2 came, and after that there was sejjil-2 update.
so I call the first one sejjil-2 test that has blue color Sejjil-2A and the next test with green color Sejjil-2B
so basically we have 2 version that its 2nd version has two version.
The Sejil 1/A is the original two-stage, solid-propellant, surface-to-surface missile (SSM) produced by Iran with a reported 1930 km (1200 mile) range. Fired November 12, 2008.
Sejil-2/B is an upgraded version of the Sejil 1/A. The Sejil-2 two-stage solid-fuel missile has a 2,000km range and was first test fired on May 20, 2009. The Sejil-2 SSM is medium-range ballistic missile (MRBM). Improvements include better navigation system, better targeting system, more payload, longer range, faster lift-off, longer storage time, quicker launch, and lower detection possibility
Sejil-2/C (Advanced Sejil 2/B), fired on On December 16, 2009. It is faster during the powered flight portion of its trajectory and also during the re-entry phase. It is also harder to detect for anti-missile systems, as it is covered with anti-radar material. The new highly maneuverable missile is also more efficient as it requires less amount of time for pre-launch preparations.

The Sejil 2/B test.
The designations I have used are mine only. I use them to keep track of the changes. There are three variants in total known thus far.