It uses the double bands with the Bollinger correlated indicator. (width)
I don’t have a lot to say, everything is visual and we know the usefulness of bollinger bands.

I am quite satisfied with this indicator that I have the pleasure to present it to you.

I find this indicator very relevant!

However, let’s not forget that the Graal doesn’t exist, it’s nevertheless a visual pleasure for me!

Yours sincerely
IV

//
//============================== Indicateur

BW = BollingerBandWidth[20](close)
MM = average[20](close)
Bolup = MM+STD[20]*1.0
Boldw = MM-STD[20]*1.0
Bol1 = MM+STD[20]*1.0
Bol2 = MM-STD[20]*1.0
Bol3 = MM+STD[20]*2.0
Bol4 = MM-STD[20]*2.0

//============================== Trend Bullsih

CA1 = close > MM
CA2 = BW > BW[1]
Bullsih = CA1 and CA2

if Bullsih then
 A = 1
else
 A = 0
endif

if A = 1 then
 drawcandle(boldw,bolup,boldw,bolup)coloured(28,144,194,50)
 R = 28
 G = 144
 B = 194
 T = 250
endif

//============================== Trend Bearish

CV1 = close < MM
CV2 = BW > BW[1]
Bearish = CV1 and CV2

if Bearish then
 V = 1
else
 V = 0
endif

if V = 1 then
 drawcandle(bolup,boldw,bolup,boldw)coloured(100,100,100,50)
 R = 100
 G = 100
 B = 100
 T = 250
endif

//============================== No Trend

if A = 0 and V = 0 then
 R = 158
 G = 158
 B = 158
 T = 90
endif

//============================== Bande Bolliger

return MM coloured(R,G,B,T) style (line,2) as "Middle", bol1 coloured(R,G,B,T) style (line,2) as "bol1", bol2 coloured(R,G,B,T) style (line,2) as "bol2", bol3 coloured(R,G,B,T) style (line,2) as "bol3", bol4 coloured(R,G,B,T) style (line,2) as "bol4"