RGB Chat

Considering the ARGB is used less than RGB color,I correct the input format of color this time and improve the multiple gradient effect.

Now you just need to input 6 digits[R(red)G(green)B(blue)]：
1.single color
Input format
```
#RGByour text
```
example
```
#B0E0E6ABCDEFG
```

2.gradient color
Input format(from color A to color B,then follows words)
```
#RGB-RGByour text
```
example
```
#FF69B4-FFF0B4Hello World!
```

3.multiple gradient effect：

Input format(several colors ,then follows words)
```
#RGB-RGB...-RBGyour text
```
example
```

#FF69B4-BBAACC-B0E0E6-45FF9AI need to be the one

```