Because Nature has optical surprises in the colours that you see in birds' feathers

Pigment Classification: Synthetic OrganicColor Index Name: PY154Color Index Number: 11781Chemical Description: Benzimidazolone Yellow H3GOpacity/Transparency: Semi-OpaqueLightfastness Rating: 1Permanence: ExcellentMunsell Notation Listing: N/AGloss Average: N/AViscosity Range: N/ACIE L*a*b* Values: N/ATint Strength: N/A

Pigment Classification: Natural InorganicColor Index Name: PY43Color Index Number: 77492Chemical Description: Natural Hydrated Iron OxideOpacity/Transparency: Semi-OpaqueLightfastness Rating: 1Permanency: ExcellentMunsell Notation Listing: Hue 9

Bone glue is used to seal the canvas before the gesso (primer) is applied

Gansai Tambi watercolor paint is made in Japan according to ancient traditions

leuchtturm1917 drehgriffel nr 2 stiftblyant 0 7mm forest green 367284 TitaniumYell Because Nature has optical surprisesTwist pencil No. 2 mechanical pencil Mechanical pencil with twist mechanism, made of aluminum and a front tip (finetip) made of steel 0. 7 mm graphite lead The hardness of the pencil: HB Buy refill here Refillable (container that holds multiple pins simultaneously)